MAGNETIC RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME

PROBLEM TO BE SOLVED: To provide a magnetic recording medium for a magnetic storage apparatus, in which information can be recorded/reproduced at a high-density, and in which the deterioration of the reproduced signal due to the thermal demagnetization is little. SOLUTION: In the magnetic recording medium, in which a first under film to be formed on a nonmagnetic substrate consists of a NiTa alloy being nonmagnetic and having an amorphous structure, and in which a second under film thereon consists of an alloy at least including Cr and Ti, and in which a first magnetic film thereon consisting of a CoCrPt alloy, a nonmagnetic intermediate film consisting of Ru, and a second magnetic film consisting of a CoCrPtB alloy are serially formed, oxygen locally exists on the interface between the first under film and the second under film. The noise which arises from the medium is reduced, a high S/N is obtained, and the magnetic storage apparatus with a high recording density equal to or more than 46.5 Mbits per 1 mm can be realized.